Koloman Moser / Johann Souval (maker) / Wiener Werkstätte brooch, blue and white champlevé enamel on gilt copper, marked, c.1910 (see original photo & drawing from the MAK / Wiener Werkstaette Archive in Vienna below)
Koloman Moser / Johann Souval (maker) / Wiener Werkstätte brooch, blue and white champlevé enamel on gilt copper, marked, c.1910 (see original photo & drawing from the MAK / Wiener Werkstaette Archive in Vienna below)